XSLT issue

Hi

Could someone explain me how this xslt works in biztalk? if i want to change the node path to full path, how to do it?

<xsl:variable name=”unique-countries”

select=”//cities/city[not(@country=preceding-sibling::city/@country)]/@country” />

<countries>

          <xsl:for-each select=”$unique-countries”>

                  <country name=”{.}”>

                          <xsl:for-each select=”//city[@country=current()]”>

                                <city><xsl:value-of select=”@name” /></city>

                        </xsl:for-each>

                </country>

        </xsl:for-each>

  </countries>

I am working on grouping nodes using XSLT in biztalk. I used the above XSLT ( i got it from online) and I got output without child nodes, Cuntry. 

It looks like It didn’t enter into for loop. I think I need to give node full path.

Could someone tell me which places i need to change? I tried, no luck so far.

Thank you in advance,

Siva